<template>
  <div class="city-list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.currentCity}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" @click="handleCityClick(item.name)" v-for="item in hot" :key="item.id">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div @click="handleCityClick(city.name)" class="item border-botttom" v-for="city in item" :key="city.id">{{city.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'

export default {
  props: {
    cities: Object,
    hot: Array,
    letter: String
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper, {click:true})
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    letter () {
      if(this.letter) {
        this.scroll.scrollToElement(this.$refs[this.letter][0])
      }
    }
  },
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  }
}
</script>
<style lang="scss" scoped>
@import "~styles/varibles.scss";
.city-list {
  position: absolute;
  top: 1.58rem;
  bottom: 0;
  left: 0;
  right: 0;
  overflow: hidden;
  .border-topbottom {
    &:before {
      border-color: #ccc;
    }
    &:after {
      border-color: #ccc;
    }
  }
  .border-bottom {
    &:before {
      border-color: #ccc;
    }
  }
  .title {
    line-height: 0.55rem;
    background-color: #eee;
    padding-left: 0.2rem;
    color: #666;
  }
  .button-list {
    padding: 0.1rem 0.6rem 0.1rem 0.1rem;
    overflow: hidden;
    .button-wrapper {
      width: 33.3%;
      float: left;
      .button {
        padding: 0.12rem 0.1rem;
        box-sizing: border-box;
        margin: 0.1rem;
        text-align: center;
        border: 0.02rem solid #ccc;
        border-radius: 0.06rem;
      }
    }
  }
  .item-list {
    .item {
      line-height: 0.76rem;
      padding-left: 0.2rem;
    }
  }
}
</style>

